Lamp.



. S. RYAN.

LAMP.

APPLICATION FILED MAR. 3, 1908.

Patented May 10, 1910.

[Ill

W/T/VESSES WILLIAM SPENCER RYAN, OF VIOLA, ILLINOIS.

LAMP.

To all whom it may concern:

Be it known that I, WILLIAM SPENCER RYAN, a citizen of the UnitedStates, and a resident of Viola, in the county of Mercer and State ofIllinois, have invented a new and Improved Lamp, of which the followingis a full, clear, and eXact description.

This invention is an improvement in lamps, relating more especially tostreet lamps of the character disclosed in Letters Patent granted to meMay 12, 1908, Number 887,698, wherein the fuel of the lamp is containedin a reservoir which forms a lamp post.

The present invention not only has in contemplation the location of thesupply reservoir in the lamp post or casing, but also the feed tankwhich supplies the fuel to the lamp, together with means for introducingfluid pressure above the free surface of the fuel in both the reservoirand feed tank, to respectively discharge the fuel in the reservoir tothe feed tank above and thence feed the fuel under pressure to the lamp.

The invention further resides in certain special features ofconstruction and combination of parts, as will be hereinafterparticularly described and set forth in the claims.

Reference is to be had to the accompanying drawings forming a part ofthis specication, in which similar characters of reference indicatecorresponding parts in both the views.

Figure 1 is a side elevation of the lamp complete, and Fig. 2 is acentral vertical section through the upright casing constituting thelamp post.

In carrying out the invention I employ an upright cylindrical casing 5,which forms the lamp-post and is securely anchored to the ground,preferably by bolting or otherwise securing feet 6 on the inside of thelower end of the casing and bolting these feet to a base of concrete 7.The metal of the casing to which the feet are bolted is preferably ofdouble thickness, in order to insure strength and rigidity, and directlythereabove the casing is provided with a bottom or head 8 which, inconnection with a similar head 9 arranged intermediate the casing, formsa supply reservoir for the fuel. The heads 8 and 9 are respectivelyprovided with nipples 10 and 11, the former serving as a drain, as ameans for connecting the post and its appurtenances to an interiorlighting system Specification of Letters Patent.

Application filed March 3, 1908.

Patented May 10, 1910. Serial N o. 418,946.

by underground pipes or for supplying the reservoir from an undergroundsource, and the nipple 11 extending a slight distance within thereservoir and constituting a filling-plug. This extension of the nipple11 into the reservoir prevents the same from being completely filled,thus at all times presenting an air chamber above the free surface ofthe fuel.

That part of the casing above the reservoir has a projecting flange forshedding the water, and a door 12, which provides access into the upperportion of the post and wherein is located a fuel feed tank 13, an aircompressor 14, together with the pipe connections between thecompressor, reservoir and tank, these connections comprising a pipe 15leading from the top of the reservoir through the feed tank to its upperportion, and being provided with valves 16 and 17, between which isconnected the discharge pipe of the compressor, preferably in the natureof a flexible tube 1S, in order that it may be easily disconnected.Leading from a point near the bottom of the reservoir to the upperportion of the feed tank is a pipe 19 having a controlling valve 19a.Connected with the feed tank, at a point normally above the free surfaceof the fuel is a pressure gage 20. Also connected to the feed tank is afeed pipe or hollow wire 21, which passes through a tubular overhang-ingarm 22, rigid with the top of the tank, to a lam 23, and has acontrolling valve 21 located at a point within convenient reach from thecasing door. This valve is always left open, except in case of accidentor when the lamp is being repaired.

In the operation of the apparatus, after the reservoir has been filledwith oil, gasolene or suoli other fuel, the Valves 19a and 17 are openedand the valve 16 closed. The compressor is then operated to force theair above the free surface of the liquid in the reservoir, which causesthe fuel to flow up through the pipe 19 to the feed tank, the lamp atthis time being lighted. The length of time the lamp will burn undercertain pressures in the tank may be found by practice, so that thepumping of the air into the reservoir may be continued unt-il the gagerecords a pressure which indicates that there is sufiicient fuel in thefeed tank to burn the length of time required. The valves 17 and 19a arethen closed, and the pressure in the feed tank further increased ifdesired by working the pump with the valve 16 open. This causes anincreased supply of fuel to pass from the feed tank to the lamp, whichobviously makes the latter burn brighter. When the desired pressure isrecorded on the gage, the pumping of air directly into the feed tank isdiscontinued and the valve 16 closed. Then the lamp has burned thelength of time for which fuel has been forced into the feed tank it willgo gut of its own accord for the lack of more uel.

It will be apparent that by inclosing the feed tank, air compressor,gage, and the several connections in the casing of the post, these partswill not only be protected from the Weather but will be removed frompointswhere they would present an unsightly appearance.

The invention as shown and described while being the preferredconstruction and arrangement of the apparatus, may obviously be modifiedin particulars falling within the scope of the annexed claims.

I-Iaving thus described my invention I claim as new and desire to secureby Letters Patent:

1. The combination of an upright casing, constituting a lamp post, afuel supply res ervoir in the lower portion of the casing, a lampcarried by the casing, a fuel feed tank located in the upper portion 0fthe casing,

having connections with the reservoir and lamp, a door forming a portionof the upper part 'of the casing, vand a filling-tube eX- tending intothe top of the reservoir below the normal level of the fuel, accessiblethrough said door.

2. The combination of an upright casing, constituting a lamp post,having spaced heads secured therein forming in connection with thecasing a fuel reservoir, a fuel feed tank arranged within the casingabove the reservoir, a lamp, a pipe leading lfrom the top of thereservoir to the top of the feed tank, having controlling valves, an aircompressor having a connection with said pipe between the controllingvalves, a supply pipe leading from the lower portion of the reser voirto the upper portion of the feed tank, a lamp having a feed connectionwith the lower portion of the feed tank, adapted to be fed under the airpressure created by the compressor in the fuel tank, and a gageconnected with the fuel feed tank for determining said pressure.

In testimony whereof I have signed my name to this specication in thepresence of two subscribing witnesses.

IVILLIAM SPENCER RYAN.

lVitnesses JOHN G. ZEHN, BERT BAILEY.

